Machine for making millboard.



,1, N. A ,J .nuv E. T. N E T A P Y No. 840,387.

W; SILLMAN. MACHINE. FOR MAKING MILLBQARD.' Y

2 SHEETS-SHEET l.

l APPLICATION FILED .TUNE 11, 1908.

No. 840,387. PATENTED l, 1907. W. SILLMAN.

MACHINE FOR. MAKING MILLBOARD.

APPLIOATION FILED JUNI: 11, 1906.

2 SHEETS-SHEET 2.

vUNITED STATES- PATENr'A OFFICE.-

.WILLIAM'ASILLMAN, OF'NEW YORK, N. Y. MAcHlNE Fon MAKING. MILLBOARD.

i To all whom it'may concern: l

Be it known that I -WILLIAM Summit, a citizen vof the United tates of America and a resident of the .borough of Brooklyn county of Kings, city and State of New York, have Ainvented certain new and useful.

Improvements' in-Machines for Making Millboard, of which the following is a specification.

Myinvention relates generally to the manufacture of plates, sheets, or boards out of pulp-likemixtures, and more specifically Y consists of improved mechanism for economtion.

ically handling mixtures containing ingredients of great neness of pulverization and considerable specific gravity.

' Heretofore 1t has been customary to emaratus 'of the general paper-making P105' or car card-making machine type, known in the .art as wet-machines for t e urpose of making millboard and heavier p ates or sheets out of various pulped fibrous materials, including short asbestos bers mixed with various pulverized materials as fillers .and as active constituents in the composi- When a material which is nely ulverized, such as hydraulic cement, and w "ch has considerable specific avity is employed in large quantity in snag-manufacture, the same 1s wasted in l e part by'being drawn through the-meshes o the wire-cloth coveredV vention is illustrated in the accompanying twosheets of drawings, in which- Figures 1, 1 is a side elevation of the ma- -V chine with parts broken away.

.Thro hout the dra s like referencefigures 1'llndic'a like paxlg l 1 re resent arts of the main frame of the mac e, an 2 is an endless band of felt -over a series of guide-rollers 3 3, &c. d1? is a belftr for cleaninhg sfaild felt, 4 an ajustmg-ro or ding" te etin ro er relation to the beagtli', the osition oflivvhlfch is controlled by the adjustlng-levcr 18.

23 23, &c., are suction-boxes of any con- Specieation of Letters Patent. Application led June'llKlBOB. Serial No. 321,114.

. mounted in stations.' and 39 is the upper Patented Jan.v 1, 1907.

venient form, over which the felt 2 passes.

The suction may be produced by steam-jets, blowers, or in any convenient manner. (Not here illustrated.) The felt 2 is properly ided with reference to these suction-boxes y the adi'ustable roll 5, the position of which is control ed by the screw 2.1, operated .by the hand-wheel shaft 22.

7 is a tightening-roll`for the endless band of felt, the position of which is controlled by roll mounted in movablejjournal-bearings 10, the screw 19 and the hand-wheel 20..

7 is a lower press-roll mounted in stationary journal-bearings 8, and 9 the upper pressivoted to the main carrled by the lever 13,

downward by the frame at- 14 and pulle link 15, which is connected Ito. the Weighted n pressure-lever 16. 11 is a screw for limitin .the downward m'otion of the upper press-ro 9 by means of the' ad'ustable hand-wheel nut 12. The endless felt ofV course passes between the press-rolls.

37 is the lower drying-rollfor thef'elt,

journal-bearings 38, g-roll mounted in journal-bearings 40 in the lever 42, ivoted tothe main frame at 43 and presse -downward by the adjustable weight 44. Before entern these drying-rolls the felt is further cleansel by the water-spray 59. 24 is a tank or vat to Which oneportion the stock or material, such as asbestos fiber beaten up'with a sulflcient quantity of Water,

is delivered together with additional water if required, as 1n the process-heretofore used usual rotating Wire-cloth cylinder 25, the interior portion of which is drained Abythe outlet connection 26. 46- 47 are stirrers or the bottom of the vat.`

48 is a cleaning-roll by which any material picked up b'y the vWire-cloth and not transerred to the endless belt 2 may be removed.

The guide-roller 2 7 is carried on' the bellcrank 28, ivoted to themain frame and ad` justable t screw mechanism 29.

30 is a'mixing-box to which one portion of the stock or material, such as Portland 'cement finely pulverized and mixed u with a sufficient quantity of water, is elivered through the stock-pi e 31.

32 is a water-pipe t rough which a suitable Yquantity of Water is delivered.

33 isa passage leading from the mixingagitators located in ough the worm-wheel andworm- `up`on the wet-machine. .In this vat is the loo IIC

box tothe distributing-trough 34'. This passage is controlled by a gate 35. l The trough 34 has a curved bottom, as shown in crosssection. 36 is an agitator of any convenient form located in the distributing-trou h. As

shown, it consists of a horizontal sha t with ay oint over the upper strand of the endless` elt 2. This apro'n 4has upturned sides,l one of which l-is shownat 52. A regulating-roll '53, having a face of rubber or similar suitable material, is mounted in journal-bearings which can be adjusted toward or away from the felt 2fby means of the adj usting-screw 54. This roll may coperate with the felt 2 or with the apron 51, or withrbothat their junc- It is rotated by the belt 55 inthe di.- rection to produce circumferential travel on,

ture.

its under side oppositeto the. travel of the felt at the point offcontact 'therewith or opposite to'the direction of flpwf the material Adown the apron 51. Y The mixing-box is vdividedby a ytransverse .partition 56, which Vpermits'any excess of material to flow over mto the `,compartment behind the partition, which -serves as an overflow-box and which is drained by the overioW-pipe' 58.

59 is a stock-chest from which the cement' v solution is drawn by any suitable means, as

the pump 60, through ipe 61 andv delivered to stock-pipe31. l 4 e overflow-pipe 5,8 returns thesurplus .pulp to this stock-chest.

Theoperation of my invention is as f0.1- lows: The apparatus being set in motion, .a felted layer of asbestos fiber will be deposited -upon the wire-cloth cylinder and-in turn will -be transferred to' the endless felt 2 in the ordinary and well-understood manner. As this layer of material passes -under the a ron 51 a suitable quantity of finely-divide' cement in solution is deposited upon it. A compound .layer of cement and pulp is .thus formed on the -felt 2, and as this passes lover thesuction-boxesI 23 23, &e., a considerable 'quantity of the water or other liquid is sucked down thro h the felt and the layer of material on theullt is left ina suiiciently di?r condition to adhere to the upper pressrol 9 as the felt passes throughsaid ressrolls'.- This press-roll is .usually made o iron. IA lm of material is therefore wound up on the upper press-roll 9, the same risi as the -thickness of the winding on its s ace increases until a. redetermined thickness is attained, when t e cylindrical covering thus -ordinary mechanism of a We 84o, as?

formed is slit longitudinally Iof the cylinder by a knife in the hands of the operator and removed in the shape of a plate or sheet Whose length is the length of the cylinder and whose width is the. circumference thereof. The felt from which the major portion of the .material has thus been removed passes on d'own'around the uide-rolls 4 and up by the beater 17, which nocks out of the felt the small uantity of material remaining therein. The fe t then passes between the drying-rolls 37 39, which squeeze the moisture out of it, and thence around the tightening-roll 6 back to the wire-cloth cylinder, Where it again'has deposited upon it Vthe film of asbestos, to

which cement 4is subsequently added, as before described.

The advantages of my invention comprise the practically complete saving of all Waste of material, there being no opportunity for any of the cement or other substance to escapedeposit-ion upon the i'elt 2, and the ease of regulation of the raw materials and of the machine and process atfevery point of operation, the possibility of cleaning and drying the felt, &c.

It is evident, of course, that various changes could be made the relative arrangement and form of the arts of my invention without de arting om the spirit and sco e thereof so` ong as the general principle o operation above set forth be adhered to. Incase more or less Water -Were needed .to dissolve vand set the dried cement, theaction of the suction-boxes maybe modified or dispensed with and, if desired, more Water added to the pulp in the mixing-tank -or to the cement in the mixing-box 30.

Having therefore described .my invention,

1. In a machine for making millboard and similar substances, the combination with the ordinary mechanism of, aWet aper-making machine including an endless .band of felt on which a felted lm of fibers is collec-ted, of means adapted to deliver upon the upper strand of said endless felt a cement solution.

2. In amachine for making millboard and similar substances, the combination with the ordinary mechanism of a Wet aper-mak- -ing -machine including an endless band of felt on which a felted lm of fibers is collected, of means adapted to deliver upon the upper strand of said endless felt a `cement solution, said means comprising a distributing-trough, a graduated slulceway therein, a proximating in length the Width of the fellt, and conveying means from said sluicew'ay to the upper section of the endless felt.

3. In a machine f or making millboard and similar substances, the combination with the aper-making machine including an endless and of felt n which a' felted film of fibers is collected, of means adapted to deliver upon the upper Crrectons in Letters Patent No. 840,387.

Way to a oint over the upper section of the endless fe t.

4. In a machine for making millboard and similar substances, the combination With the ordinary mechanism of a Wet aper-making machine including an endless and of felt on which a felted film of fibers is collected, ofA

means adapted to deliver upon the upper strand of said endless felt a celnent solution, said means comprising a distributing-trough, a graduated sluicewaytherein, an agitator in the trough located adjacent to the sluiceway, and an apron extending from the sluice- Way to a point over the up er section of the endless felt, said apron aving u turned sides spaced apart a distance equa to the Width of the Web to be formed.

5. In a machine for making millboard and similar substances, the combination With the ordinary mechanism of a Wet aper-making machine including an endless liand of felt on which a felted iilm of fibers is collected, of means adapted to deliver upon the upper strand of said endless felt a cement solution, said means comprising a distributing-troughI a graduated sluiceway therein, an agitator in the trough located adjacent to the sluice- Way, and an apron extending from the sluice- Way to a point over the upper section of the endless felt, together with a distributingroll located over the felt near a point Where the cement solution is delivered to it.

6. In a machine for making millboard and similar substances, the combination with the ordinary mechanism of a Wet aper-1naking machine including an endless and of felt on which a iclted film of fibers is collected, of means adapted to deliver upon the upper strand of said endless felt a cement solution,

[sinn] Signed and sealed this 22d day ofJanuary, A. D., 1907.

said means comprising a distributing-trough, a graduated sluiceway therein, an agitator in the trough located adjacent to the sluice- Way, and an apron extending from the s1uice- Way to a oint over the upper section of the endless fe t, together with a distributing-roll located over the feltnear a point Where the cement solution is delivered to it, said roll revolving in a direction to produce circumferential travel on its under side op osite to the travel of the felt at the point cip contact therewith.

7. In a machine for making millboard and similar substances, the combination With the ordinary mechanism of a Wet aper-making machine including an endless liand of felt on which a felted ihn of fibers is collected, 0i' means adapted to deliver upon the upper strand of said endless felt a cementsolutlon and means disposed between the point of such delivery and the press-rolls of the Wet machine for varying the amount of Water in the mixture formed onthe felt.

8. In a machine for making millboard and similar substances, the combination Vwith the ordinary mechanism of a Wet aper-making machine including an endless band of felt on which a felted iilm of fibers is collected, of means adapted to deliver upon the upper strand of said endless felt a cement solution and means disposed between the point of such delivery and the ress-rolls of the Wet machine for varying t e amount of Water in the mixture formed on the felt, said lastmentioned means comprising a series of suction-boxes, located under the upper strand of felt. i

Signedfat Brooklyn, New York, this 8th day of June, 1906.

WILLIAINI SILLM AN.

Witnesses CHAs. CURNOW, E. N. ROBER.

A It is hereby certified that in Letters Patent No. 840,387, granted January 1, 1907, upon the application of William Sillman, of New York, Y., for an improvement in Machines for Making Millboard, errors appear in the printed specicaton requiring correction, as follows: On page 1, line 65, the numeral 7 should read 6, and same page, the words roll mounted in movable journal-bearings 1Q, comprising line 67, should be stricken vout and inserted as a line after line 70 as now numbered, same page; and that the said Letters Patent should be'read with these corrections therein that the same may conform to the record of the case in the Patent Oce.

F. I. ALLEN,

Commissioner of Patents.

Crrectons in Letters Patent No. 840,387.

Way to a oint over the upper section of the endless fe t.

4. In a machine for making millboard and similar substances, the combination With the ordinary mechanism of a Wet aper-making machine including an endless and of felt on which a felted film of fibers is collected, ofA

means adapted to deliver upon the upper strand of said endless felt a celnent solution, said means comprising a distributing-trough, a graduated sluicewaytherein, an agitator in the trough located adjacent to the sluiceway, and an apron extending from the sluice- Way to a point over the up er section of the endless felt, said apron aving u turned sides spaced apart a distance equa to the Width of the Web to be formed.

5. In a machine for making millboard and similar substances, the combination With the ordinary mechanism of a Wet aper-making machine including an endless liand of felt on which a felted iilm of fibers is collected, of means adapted to deliver upon the upper strand of said endless felt a cement solution, said means comprising a distributing-troughI a graduated sluiceway therein, an agitator in the trough located adjacent to the sluice- Way, and an apron extending from the sluice- Way to a point over the upper section of the endless felt, together with a distributingroll located over the felt near a point Where the cement solution is delivered to it.

6. In a machine for making millboard and similar substances, the combination with the ordinary mechanism of a Wet aper-1naking machine including an endless and of felt on which a iclted film of fibers is collected, of means adapted to deliver upon the upper strand of said endless felt a cement solution,

[sinn] Signed and sealed this 22d day ofJanuary, A. D., 1907.

said means comprising a distributing-trough, a graduated sluiceway therein, an agitator in the trough located adjacent to the sluice- Way, and an apron extending from the s1uice- Way to a oint over the upper section of the endless fe t, together with a distributing-roll located over the feltnear a point Where the cement solution is delivered to it, said roll revolving in a direction to produce circumferential travel on its under side op osite to the travel of the felt at the point cip contact therewith.

7. In a machine for making millboard and similar substances, the combination With the ordinary mechanism of a Wet aper-making machine including an endless liand of felt on which a felted ihn of fibers is collected, 0i' means adapted to deliver upon the upper strand of said endless felt a cementsolutlon and means disposed between the point of such delivery and the press-rolls of the Wet machine for varying the amount of Water in the mixture formed onthe felt.

8. In a machine for making millboard and similar substances, the combination Vwith the ordinary mechanism of a Wet aper-making machine including an endless band of felt on which a felted iilm of fibers is collected, of means adapted to deliver upon the upper strand of said endless felt a cement solution and means disposed between the point of such delivery and the ress-rolls of the Wet machine for varying t e amount of Water in the mixture formed on the felt, said lastmentioned means comprising a series of suction-boxes, located under the upper strand of felt. i

Signedfat Brooklyn, New York, this 8th day of June, 1906.

WILLIAINI SILLM AN.

Witnesses CHAs. CURNOW, E. N. ROBER.

A It is hereby certified that in Letters Patent No. 840,387, granted January 1, 1907, upon the application of William Sillman, of New York, Y., for an improvement in Machines for Making Millboard, errors appear in the printed specicaton requiring correction, as follows: On page 1, line 65, the numeral 7 should read 6, and same page, the words roll mounted in movable journal-bearings 1Q, comprising line 67, should be stricken vout and inserted as a line after line 70 as now numbered, same page; and that the said Letters Patent should be'read with these corrections therein that the same may conform to the record of the case in the Patent Oce.

F. I. ALLEN,

Commissioner of Patents.

Uorrectlons in Letters Patent No. 840,387.

It is hereby certified that in Letters Patent No. 840,387, granted January l, 1907, upon the application of William Sillman, of New York, N. Y., for an improvement in Machinesfor Making Millboard,

On page l, line 65, the numeral 7 should read 6', and same errors appear in the printed specification requiring correction, as follows:

page, the words roll mounted in movable journal-bearings 10, comprising line 67, should be stricken out and inserted as a line after line 70 as now numbered, same page; and that the said Letters Patent should be read with these corrections therein that the same may conform to the record of the case in the Patent Office.

Signed and sealed this 22d day of January, A. D., 1907.

[SEAL] F. I. ALLEN,

Commissioner of Patents. 

